Jennifer Garner Sydney Bristow Actor Victor Garber Jack Bristow Actor Ron Rifkin Arvin Sloane Actor Michael Vartan Michael Vaughn Actor Lena Olin Irina Derevko, Laura Bristow Actor Bradley Cooper Will Tippin Actor Merrin Dungey Francie Calfo Actor Carl Lumbly Marcus Dixon Actor Kevin Weisman Marshall Flinkman Actor David Anders Julian Sark Actor Amy Aquino Virginia Kerr Guest Star James Lesure Chris Blair Guest Star Stephen Markle Senator Douglas Guest Star Damien Leake Committee Member Guest Star Newell Alexander Congressman Guest Star Dan Istrate Public Employee Guest Star Daniel Faraldo Manolo de Souza Guest Star Kevin Sutherland Agent Blake Guest Star Loren Haynes C.I.A. Strike Team Lead Guest Star Vladimir Skomarovsky Valery Kholokov Guest Star Kevin West Agent Kelsey Guest Star Sarah K. Peterson Young Sydney Guest Star J.J. Abrams Executive Producer John Eisendrath Executive Producer Ken Olin Executive Producer, Director Jeff Pinkner Writer